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Prog. Theor. Phys. Vol. 58 No. 2 (1977) pp. 614-629

The Lowest Subprocess Model of Large p_T Hadron Productions

Masahiro Imachi, Shoichiro Otsuki, Fumihiko Toyoda^* and Hiroshi Yoneyama

Department of Physics, Kyushu University 33, Fukuoka 812
^*The Second Department, Kinki University, Iizuka 820

(Received January 20, 1977)

Abstract:

A counting rule we have proposed gives the same power behaviours of two-body reactions and of form factors as the dimensional counting rule in so far as the baryon B and the meson M are concerned, where the composite structure, B = qqqJ and M = q q, is assumed, J denoting the conserved junction of three strings linked to the urbaryon q. Our rule leads to the p_T^-8 behaviour of the single-particle inclusive cross section ρ≡Ed σ/ dp³ at large p_T, when the hard subprocess is the lowest rearrangement of the constituent q and J(qq →qq, qJ →qJ, JJ →JJ, etc.). Taking this lowest subprocess, we examine leading behaviours of ρ∼p_T^-8 (1 - x_T)^m with x_T ≡2p_T / √s at x_T ∼1, particle ratios among various single particle inclusive cross sections and two-particle correlations. The overall agreement with experiment is found. We have ρ(pp →π⁰ X) / ρ(π^± p →π⁰ X) ∼(1 - x_T)². Various charge ratios such as ρ(pp →π⁺ X) / ρ(pp →π^-X) > 2 at x_T ∼1 are reproduced when the distribution and fragmentation functions which give characteristic aspects of deep inelastic lepton-hadron reactions are adopted. Energy dependence of the two-particle correlations, that differs between the same and opposite sides, is explained.

URL : http://ptp.ipap.jp/link?PTP/58/614/
DOI : 10.1143/PTP.58.614

[ Full Text PDF : FREE ACCESS (1182K) ] Citation: Plain Text BiBTeX EndNote(RIS) RSS

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Citing Article(s) :

1. Progress of Theoretical Physics Vol. 59 No. 3 (1978) pp. 889-902 :

   Large p_T Hadron Productions and String Junction Model

   Masahiro Imachi and Hiroshi Yoneyama

2. Progress of Theoretical Physics Vol. 61 No. 3 (1979) pp. 914-927 :

   Large p_T Jet Production and Hard Rearrangement of Quarks

   Takeo Matsuoka and Masahiro Nakamura

3. Progress of Theoretical Physics Vol. 61 No. 3 (1979) pp. 928-941 :

   Vortex String Picture and Large p_T Reactions

   Masahiro Imachi, Tetsuji Kawabe, Shoichiro Otsuki and Hiroshi Yoneyama

4. Progress of Theoretical Physics Supplement No.63 (1978) pp. 49-279 :

   Constituent Rearrangement Model and Hadron Reactions

   Yuji Igarashi, Masahiro Imachi, Takeo Matsuoka, Kansuke Ninomiya, Shoichiro Otsuki, Shoji Sawada and Fumihiko Toyoda

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